<template>
<div id="root">
    <div class="todo-container">
      <div class="todo-wrap">
        <MyHeader @addTodo="addTodo"/>
        <MyList :todos="todos"/>
        <MyFooter :todos="todos" @ccdAll="ccdAll" @deltodoAll="deltodoAll"/> 
      </div>
    </div>
</div>
</template>

<script>
import MyList from './components/MyList'
import MyHeader from './components/MyHeader'
import MyFooter from './components/MyFooter'
export default {
  name:'App',
  components:{
    MyHeader,
    MyList,
    MyFooter,
  },
  data(){
    return {
      todos:JSON.parse(localStorage.getItem('todos')) || []
    }
  },
  watch:{
    todos:{
      deep:true,
      handler(newVal,oldVal){
        localStorage.setItem('todos',JSON.stringify(newVal));
      }
    }
  },
  methods: {
    addTodo(todo){
      this.todos.unshift(todo);
    },
    changeDone(id){
      console.log(2);
      this.todos.forEach((todo)=>{
        if(todo.id === id) todo.done = !todo.done
      })
    },
    deleteTodo(id){
      this.todos = this.todos.filter(todo=>{
         return todo.id !== id
      })
    },
    ccdAll(cur){
      this.todos.map(todo=>todo.done = cur)
    },
    deltodoAll(){
      this.todos = this.todos.filter(todo => !todo.done)
    }
  },
  mounted() {
    this.$bus.$on('changeDone',this.changeDone);
    this.$bus.$on('deleteTodo',this.deleteTodo);
  },
}
</script>

<style>
    /*base*/
  body {
    background: #fff;
  }

  .btn {
    display: inline-block;
    padding: 4px 12px;
    margin-bottom: 0;
    font-size: 14px;
    line-height: 20px;
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
    border-radius: 4px;
  }

  .btn-del {
    color: #fff;
    background-color: #da4f49;
    border: 1px solid #bd362f;
  }

  .btn-del:hover {
    color: #fff;
    background-color: #bd362f;
  }
  .btn-edit{
    color: #fff;
    background-color: #233274;
    border: 1px solid #72ade6;
  }
  .btn-edit:hover{
    background-color: #18224e;
  }
  .btn:focus {
    outline: none;
  }

  .todo-container {
    width: 600px;
    margin: 0 auto;
  }
  .todo-container .todo-wrap {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
  }

  


  
</style>